411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Bc5/3. Nxe5/3...Nc6/4. Nxc6/4...dxc6/5. d3
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Chiodini gambit C40 Chiodini gambit
5. d3
Line may transpose into the Stafford gambit after 5...Nf6.